Question:
Which one of the following is necessary for evolution to be driven by genetic drift?
Which one of the following is necessary for evolution to be driven by genetic drift?
Show Hint
Remember: Genetic drift = random change, strongest in small populations.
Updated On: Dec 11, 2025
- Migration
- Natural selection
- Rapid mutation
- Small population size
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding Genetic Drift.
Genetic drift refers to random changes in allele frequencies in a population over time. These changes occur by chance, not by natural selection.
Step 2: Key Requirement.
The effect of genetic drift is most pronounced in small populations, where random fluctuations can significantly alter allele frequencies. In large populations, the effect of drift is negligible.
Step 3: Conclusion.
Therefore, a small population size is necessary for evolution driven by genetic drift.
Genetic drift refers to random changes in allele frequencies in a population over time. These changes occur by chance, not by natural selection.
Step 2: Key Requirement.
The effect of genetic drift is most pronounced in small populations, where random fluctuations can significantly alter allele frequencies. In large populations, the effect of drift is negligible.
Step 3: Conclusion.
Therefore, a small population size is necessary for evolution driven by genetic drift.
Was this answer helpful?
0
0
Top Questions on Biology
- Which one of the following statements is incorrect?
- Choose the correct statements about corals?
A. Corals are invertebrate animals a few millimeter in diameter.
B. Corals are sensitive to heat stress and ocean pH change.
C. Corals provide algae with stable environment, CO\(_2\) and nutrients.
D. Corals bleach to get rid themselves of pathogens. - In humans, calcium plays a role in
(A) Bone formation
(B) Blood clotting
(C) Muscle function
(D) Blood formation
Choose the correct answer from the options given below: - Match List-I with List-II \[ \begin{array}{|l|l|} \hline \textbf{Product} & \textbf{Producer} \\ \hline (A) \; \text{Citric Acid} & (I) \; \text{Trichoderma polysporum} \\ \hline (B) \; \text{Ethanol} & (II) \; \text{Monascus purpureus} \\ \hline (C) \; \text{Statins} & (III) \; \text{Saccharomyces cerevisiae} \\ \hline (D) \; \text{Cyclosporin A} & (IV) \; \text{Aspergillus niger} \\ \hline \end{array} \]
- Match List-I with List-II \[ \begin{array}{|l|l|} \hline \textbf{List-I} & \textbf{List-II} \\ \hline (A) \; \text{Clostridium butylicum} & (I) \; \text{Lactic acid} \\ \hline (B) \; \text{Aspergillus niger} & (II) \; \text{Butyric acid} \\ \hline (C) \; \text{Acetobacter aceti} & (III) \; \text{Citric acid} \\ \hline (D) \; \text{Lactobacillus} & (IV) \; \text{Acetic acid} \\ \hline \end{array} \]
View More Questions
Questions Asked in IIT JAM BL exam
In the following figure, the radius of the circle circumscribing the regular hexagon is 2 cm. The area of the shaded region is ............ cm\(^2\) (round off to 2 decimal places)
- IIT JAM BL - 2019
- Mathematics
Which of the following statements is/are TRUE for the function \( f(x) \) shown in the figure given below?
- IIT JAM BL - 2019
- Mathematics
Match the metabolic pathways in Group A with corresponding enzymes in Group B
- IIT JAM BL - 2019
- Biochemistry
Which one of the following plots represents exponential growth?
- IIT JAM BL - 2019
- Mathematics
- The complete oxidation of one mole of palmitoyl CoA yields 23 moles of water and 16 moles of carbon dioxide. The amount of water that can be produced from 1 kg of tripalmitate is ............ mL (round off to 2 decimal places)
- IIT JAM BL - 2019
- Biochemistry
View More Questions